On the evening of June 27, 1910, Francisco Leona kidnapped Bernardo Gonzalez Parra, a seven-year old-from Rioja, drugged him with chloroform and put him in a sack.

While Julio Hernández el Tonto distracted him, Leona covered the mouth of Bernardo Gonzalez Parra with a handkerchief bathed in chloroform.

[6] Leona lay Bernardo down on a table, and held by the others, he stabbed him in the armpit while Agustina Rodríguez picked up the blood with a cooking pot and gave to Francisco Ortega.

To finish the ritual, Bernardo's body was concealed in a crevice, unburied but covered with herbs and stones, located in Las Pocicas.

When distributing the actual 3000 Ortega paid him for his services, Leona didn't share it out equally so Julio Hernández resorted to authorities and declared the crime.

[13] This crime gave rise to the terms Hombre del saco and Sacamantecas,[14] because the kidnapers used a gunny sack to carry the child.